Chalcogen, Fe-O, Magnetic hysteresis, Trigonal

• Bi-Fe-O
• Bi-Fe-La-O
• Bi-Fe-O-Sm
• Bi-Fe-Nd-O
• Ba-Bi-Fe-O
• coercive field
• remanent magnetization
• remanent induction
• chalcogen
• transitional
• oxide
• disordered
• antiferromagnetic